Journal
ANALYTICA CHIMICA ACTA
Volume 953, Issue -, Pages 63-70Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2016.11.049
Keywords
Amphiphilic carbon dots; Fluorescence resonance energy transfer; Al3+ detection
Categories
Funding
- National Natural Science Foundation of China [21374078, 51303132]
- Tianjin Research Program of Application Foundation and Advanced Technology [15JCYBJC18100, 15JCTPJC59200]
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In this paper, a simple and effective method was designed to synthesize hydrophobic carbon dots. Subsequently, amphiphilic fluorescent carbon dots (A-CDs) were synthesized by further surface modification. The result A-CDs show excellent optical properties with a quantum yield of 16.9%. It was interestingly found that morin (MR) and its fluorescent metal-ion complex (MR-Al3+) can successfully coordinate on the surface of A-CDs, the emission of A-CDs completely overlapped the absorption peak of MR-Al3+. Thus, the prepared A-CDs can be used as an effective fluorescent probe for Al3+ based on a fluorescence resonance energy transfer process. The sensing platform can realize real-time detection of Al3+ within 0.5 min. The fluorescence signals of the system were linearly correlated with the concentration of Al3+ over a range of 8-20 mu M, with a detection limit of 0.113 mu M. The method was also successfully applied to image the distribution of Al3+ in Human Umbilical Vein Endothelial Cells. (C) 2016 Elsevier B.V. All rights reserved.
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